The sonic toothbrush revolution: why is the battery so important?


The choice of battery is a key aspect when purchasing a sonic toothbrush, which is often underestimated. There are mainly three types of batteries: nickel-cadmium (NiCd), nickel-metal hydride (NiMH), and lithium-ion (Li-Ion). Each of these types of batteries has its own advantages and disadvantages, and choosing the right battery can significantly affect the life and performance of your sonic toothbrush. A high-quality battery will provide better and more consistent performance, while a lower-quality battery may impair your toothbrush's performance and shorten its lifespan. Therefore, it is important to have a good understanding of the different types of batteries so that you can make an informed decision.

Nickel-cadmium (NiCd):

The nickel-cadmium battery is one of the oldest types of batteries used in sonic toothbrushes. Despite its durability and fast charging time, it has significant disadvantages, such as the memory effect, which causes it to lose its maximum capacity if not completely discharged. In addition, the NiCd battery tends to self-discharge quickly and contains toxic cadmium, which poses risks to both the environment and health. Due to these disadvantages, this type of battery is currently less frequently used in sonic toothbrushes.

Nickel metal hydride (NiMH):

The Nickel Metal Hydride battery was developed as an alternative to the NiCd battery to reduce toxicity. This type of battery retains the benefits of fast charging, but still suffers from the memory effect and self-discharge. Although the NiMH battery is less durable than the NiCd battery, it is suitable for use in a sonic toothbrush, which is not usually exposed to harsh conditions. The significantly lower content of toxic substances makes the NiMH battery a safer choice compared to NiCd.

Lithium-Ion (Li-Ion):

NYO Pro Sonic is equipped with an advanced lithium-ion battery, which is the pinnacle of battery technology for sonic toothbrushes. The advantages of this type of battery are numerous: it is free from toxic substances, lighter and offers high energy density, which allows longer operation on a single charge. Although NiCd batteries can theoretically have a longer life, the Li-Ion battery is practically better because it does not have a memory effect. NYO Pro Sonic's modern lithium-ion technology provides an impressive battery life of up to 8 weeks on a single charge, while maintaining low self-discharge and consistent performance over the years. This makes the Li-Ion battery the perfect choice for the NYO Pro Sonic, as it allows long-term use without the need for frequent charging.


NiCd (Nickel-Cadmium)

NiMH (Nickel Metal Hydride)

Li-Ion (Lithium-Ion)


High (Cadmium)







Energy density




Memory effect


Yes (less explicit)







Long (when used optimally)





Better than NiCd


Loading time



Medium to long

Scientific evidence:

Research shows that lithium-ion batteries have higher energy density and lower capacity loss, making them ideal for use in high-end electronic devices. Their durability and performance not only support sustainable use, but also reduce the need for frequent replacement.


Battery technology in sonic toothbrushes has advanced significantly. NYO is a leader in this innovation, offering customers products that are not only efficient and aesthetically attractive, but also durable. Choosing the right battery is a key factor for the future of oral hygiene.

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